Bug 26080: Use the task queue for batch delete authorities

Bug 26080: Use the task queue for batch delete authorities

Same as the first patch, for authorities

Test plan:
Delete authority records using the batch record deletion tool
Confirm that the job is now delegated to the task queue and that
everything else is working as before

Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>